Netgear Parental Controls questions and reboot required?

I've been messing with the parental controls to block certain domains since Netgear's interface only has a way to block specific websites instead of domains. So for example if I want to block yahoo.com it will but if you go to yahoo.com/news it will be able to access. I get that.

So I setup parental controls with opendns. I found a tutorial online and it explains that after you sign in to your opendns account you can set the filter level (through the Netgear Genie) which I then set. I then go to custom setting where it will take me to a netgear/opendns site where login and you can add domains on the white/blacklists. My question IS, when I add a domain should it be instantaneously blocked? Or do I need to reboot the router for it to take effect? From my experiences after hours messing with this, it seems a reboot is required. Simply adding yahoo.com will not prevent it from being blocked but after a reboot of the router it seems to be blocked. Also, when I set the filter level from Minimal to High, a reboot is also required for this to work as well. Is this the way it should work?

Also, for non https sites, I get the openDNS has blocked this site. But on https sites I get "Your connection is not private. Attackers may be trying to steal your information........" From what I can tell there is noway to get into these sites. Is that the way that should work as well?